Hydraulic nozzle.



W. M. WHITE. HYDRAULIC NOZZLE. APPLICATION FILED sEPLzQ. I9I3.

Patented 0015.1?, 1915.

t. vention is to 'in Hydraulic Nozzles,

inicien u WILIJIAM MONROE WHITE, OF MILWAUKEE, WISCONSIN.

HYDRAULIC NOZZLE.

Specification of Letters Patent.

Patented Oct. 5, 1915.

Application led September 29, 1913. Serial No. 792,879.

To all 'whom t may concern:

Be it known that I, WILLIAM MONROE WHITE, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a certain new and useful Improvement ing is a specification.

This invention relates to improvements in the construction of hydraulic nozzles such as are used in hydraulic power plants, hydraulic mining, and similar arts.

An object of the invention is to provide a hydraulic nozzle which is simple in construction, eihcient in operation and in which a means for changing the direction and size of the jet discharged from the nozzle is confinedcntirely within a stationary nozzle casing.

One of the more specific objects of .the inprovide simple and easily accessible meansA for permitting ready manipulation of the jet discharged from the nozzle.

Another object is to provide a nozzle in which an adjustable jet size changing means is carried by a movable jet direction changing means, these means being normally lockgeared to each other so that the jet direction changing means may be manipulated without affecting the size of the jet, while the jet size changing means may be readily manipulated irrespective of the direction of the jet. I

The present invention is an improvement in the devices disclosed in patent 1,055,958,

granted March 11, 1913, and those disclosed in application S. N. 754,124, iiled March 12, 1913.

A clear conception of an embodiment of the invention may be hadby referring to the drawing accompanying and forming a part of this specification in which like reference characters designate the same parts in the various views.

Figure 1 is a central vertical section through a nozzle, turbine casing and foundation, showing the nozzle delivering a jet of water against the buckets ofan impulse Water wheel. Fig. 2 is an enlarged trans- -verse horizontal section through the nozzle disclosed in Fig. 1, showing various details of construction of the nozzle.

The stationary nozzle casing, see Figs.- 1 and 2, consists essentially of a rear casing of which the follow portion 9 formed integral with the water inlet pipe 24 for supplying water under pressure to the nozzle, and a front cover 7 secured to the rear casing portion 9. The cover 7 is also secured to the lower front turbine casing 6 and seals the joint between the turbine casing and the nozzle casing. The turbine casing comprises a lower casing 5 supported upon a suitable foundation 26 and secured to the lower front turbine casing 6, and a cover casing 3 inclosing the upper portion of the casing 5. The runner l is mounted in suitable bearings in the casing 5 and is provided at its periphery with a series of impulse buckets 2 adapted to receive the jet 25 normally delivered from the nozzle. The defiector 4- is secured to the casing 5 and serves to divert that portion of the jet which does not have its velocity entirely abstracted by the buckets 2- of the impulse wheel.

The jet direction changing means comprises a defiecting hood l0 through which the nozzle orifice is formed, and a suitable hood supporting ring l2 formed with stub shafts 27, 33, projecting laterally therefrom. Thev stub shafts 27, 33, are rotatably mounted in trunnions or bearings 30, 31, formed in the stationary casing and form pivots about which the hood 10 may be swung. The points of emergence of the shafts 27, 33, from within the stationary nozzle casing, are provided with suitable stuffing boxes 29, 32, which serve to prevent leakage of wat-er to the atmosphere along the stub shaft bearings. The outer free end of the stub shaft 27 is provided with a suitable `crank 28, to which the means for swinging the hood 10, which means may be of any of the well known forms such as disclosed in the patent above referred to, may be connecte The needle support and guide 14 is secured centrally within the hood supporting ring 12 by means of radial ribs 13. This guide 14 is bored in line with the nozzle oril'ice and supports the jet size changing means or needle 11. The needle 11 is formed with a. rearwardly projecting screw-threaded portion 15 which coacts with the internal screw threads of-a sleeve 16. The sleeve 1G is fixed within the guide 14.

The needle operating shaft 2O is rotatable and reciprocable within a bearing formed in .the rear cap 23. The shaft 20 penetrates the nozzle casing, the point of emerge-nce of the shaft from within the nozzle casing being packed by means of a` suitable stuffing box `21. The outer end of 'the shaft 20 is provided with a suitable operating wheel 22 or similar device, by means of which the shaft 20 may be rotated, either manually or automatically.

The end of the operating shaft 20 which is within the nozzle casing is connected to the rear end of the portion 15 of the needle 11 by means of a universal or flexible connectionconsisting of a link 18 and a pair of connecting blocks 17, 19. The blocks 17, 19, are each provided with two bores formed at right angles to each other. Each of these bores receives a pin which is mounted in holes in the adjacent elements connected by the respective blocks 17, 19. The block 17 with its transverse pins connects the end portion 15 of the needle 11 with one end of the link 18, forming a universal joint between these elements. The block 19 with its transverse pins connects the inner end of the shaft 20 with the other end of the link 18 and forms a universal connection between these elements. These two universal joints and the link 18 constitute a flexible connection or shaft between the operating shaft 20 and the needle 11.'u It is not, however, necessary to constitute the flexible connection of a pair of universal joints with the connecting-link as disclosed, as any other device accomplishing a similar purpose could be substituted without departing from the scope of the present invention. Y

The joint between the outer spherical surface of the hood 10 and the casing cover 7 is provided with a suitable cup leather packing 35 4which is clamped between a packing retainer ring 36 and thefront cover cap 8 by any suitable clamping means. The cap 8 is secured to the casing cover 7 by means ofstuds or cap screws 34.

During the normal operation of the noz-iv under pressure is f supplied through the inlet pipe 24, and after passing through the nozzle casing and deflecting j hood 10, is discharged through the hood orifice in the form of a jet 25 andnormallyf" zle, water against the buckets 2 of the impulse' wheel.

If it is desired to deflect the jet 25 from the buckets 2, placing the jet in the position indicated in dot and dash lines in Fig. 1,

this may be done by turning the hood 10 and the elements connected thereto' about the axes of the stub shafts 27, 33, by means of the crank 28. If it is desired to vary the size of the jet discharged from the nozzle orifice, this may be done by rotating?the L jet-sizerchanging means.

position of the needle 1l relative to the nozzle orifice. The screw-thread coaction between the needle 1l and the sleeve 16 forms a lock-geared connection between these elements.

By employing a flexible connection between the operating shaft 20 and the needle 1l, the position of the needle 11 relative to the hood l0 may be readily varied irrespective of the angular position of the hood 10. By mounting the needle 11 in the screwthreaded sleeve 1G which is secured to the hood 10, the direction of the jet discharged from the hood 10 may be varied without affecting the size of the jet, since the needle l1 is locked to the hood during movement thereof. There is, however, nothing preventing simultaneous adjustment of the needle 11 andn deflection of the hood 10 if'such action is desired.-

By permitting the fluid under pressure from within the nozzle to act on both sides of the deflecting hood 10, the forward pressure on the inner surface of the hood 10 is effectively balanced and rotation of the hood is readily permitted. The use of a stationary nozzle with a deflecting hood therein furthermore permits effective sealing of the turbine casing.

It should be understood that it is not desired to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

It is claimed and desired to secure by Letters Patent,-

1. In a nozzle, a casing, jet-size-changing means shiftable angularly and adjustable to change the size of the jet, and a flexible shaft normally intersecting the axis of angular shift for adjusting said jet-sizechanging means.

2. In' a nozzle, a casing, jet-directionchanging means within said casing, adjustable jet-size-changing means carried by said vjet-direction'-clfanging means, and a flexible shaft Within'said casing for operating vsaid 3. In a nozzle, a casing, jet-direction- 'fchanging means WithinV vsaid casing, means fpr 'operating said jet-direction-changing .means, adjustable jet-size-changing means carriedby said j et-direction-changing means, and a flexible shaft directly connected to and toperating said jet-size-changing means. 4, In a nozzle, a casing, jet-directionchanging means within said casing, jet-sizechanging means carried by said jet-direc-` tion-changing means, said jet-size-changing means being adjustably normally lockgeared to said jet-direction-.changing means. and said parts being locked during movement of said jet-direction-chan'ging means,

and means extending from without said casing through and coacting directly with same and connected directly with and for adjustment of said jet-size-changing means.

5. In a nozzle, a casing, a hood movable within said casing, a needle within said hood, said needle being adjustably normally lock-geared to said hood and said parts being locked during movement of said hood, and means extending from Without said casing through and coacting directly with same and connected directly with and for adjustment of said needle.

6. In a nozzle, a casing, a hood vmovable within said casing and having a screwthreaded sleeve fixed thereto, a. needle having a screw-threaded portion coacting with the screw threads of said sleeve, and flexible means for rotating said needle Within said hood.

7. In a nozzle, a casing, a hood movable within said casing, a needle carried by and 20 rotatable for adjustment Within said hood, a. shaft extending from Without said casing through and coacting with said casing, and a flexible connection between said shaft and said needle.

In testimony whereof, the signature of the inventor is alixed hereto in the presence of two Witnesses.

IVILLIAM MONROE WHITE.

Witnesses:

G. P. DE WEIN, W. H. LIEBER. 

